Selecting a resolution (dpi)
For general A4 black and white documents (such as invoices, letters etc.), you don't need to set a high resolution
for scanning. The majority of our document scanners scan up to 600dpi, but this is not necessary for day to day scanning.
Instead, we recommend 200-300dpi max. Of course, if you find the quality isn't quite good enough try increasing this.
Even colour documents needn't be scanned at full resolution - only photos should generally require 600dpi.
Remember - the higher the resolution the more space the resultant file will take up on your PC. Also, the scanner will
have to scan more thoroughly, and therefore each page will take longer to scan.